Revert "Skip distributing LTO cc invocations"

This reverts commit 8dacd28d888210753e9457eb31175d8e2a1c348e.
The "LTO invocations are not worth distributing" statement is in
general wrong. GCC generates the (target) machine code for every
compilation unit even with `-flto` (so it makes sense to distribute
these). And the whole program analysis is not guaranteed to be
the bottleneck of the build. As a matter of fact distributing
LTO compilations reduces the build time of LLVM/clang, GCC, and
other programs (especially C++ ones).

Closes: #428

1 files changed, 0 insertions, 3 deletions

diff --git a/src/arg.c b/src/arg.c
index 73ff707..6ca5130 100644
--- a/src/arg.c
+++ b/src/arg.c
@@ -189,9 +189,6 @@ int dcc_scan_args(char *argv[], char **input_file, char **output_file,
                 rs_trace("-mtune=native optimizes for local machine; "
                          "must be local");
                 return EXIT_DISTCC_FAILED;
-            } else if (!strcmp(a, "-flto")) {
-                rs_trace("LTO cc invocations are not worth distributing");
-                return EXIT_DISTCC_FAILED;
             } else if (str_startswith("-Wa,", a)) {
                 /* Look for assembler options that would produce output
                  * files and must be local.